The Free Dictionary had a nice slacker film list to add to what I already found. So, if you're in the mood, try one of these:
Wayne's World
Ferris Bueller's Day Off
The Breakfast Club
Fast Times at Ridgemont High
School of Rock
Back to the Future
The Simpsons
Bill and Ted's Excellent Adventure
I also like the Free Dictionary's description of slacker theory:
managing to survive by doing things at the last possible moment improves intellect as a compensatory way to cope, fashioning a wily yet lazy person. Similarly, a disorganized lifestyle may be superior to an organized one from the pragmatic perspective that a slacker will adapt to disorderliness by improving skills at memorization and at effortlessly rummaging, whereas actively organizing would require serious effort.
If that's the case, I was definitely a slacker all through school daze. Interesting how I've reformed and become a professional organizer of information - a librarian!